Plant Comparison
Astragalus vs Oregano
A side-by-side comparison of two medicinal plants — every documented constituent, action, use, safety note and cited source, assembled automatically from the Omnia Sana database.
At a glance
Astragalus and Oregano: they share 5 indicated uses (arthritis / joint pain, cold & flu, infection (general), …); 2 pharmacological actions in common.
Evidence face-off — shared uses
| Condition | Astragalus | Oregano | Verdict |
|---|---|---|---|
| Arthritis / joint pain | 1/10 | 2/10 | Comparable evidence |
| Cold & flu | 2/10 | 1/10 | Comparable evidence |
| Infection (general) | 2/10 | 3/10 | Comparable evidence |
| Inflammation (general) | 1/10 | 2/10 | Comparable evidence |
| Skin irritation | 1/10 | 3/10 | Stronger for Oregano |
Evidence scores (1–10) are computed from the tier of each cited source. “Comparable” means the two scores are within one point. Follow a score to its detailed sources.
Key Constituents
Major bioactive saponin with cardio-, neuro-, hepato- and renoprotective effects.
Phenolic monoterpenes responsible for the strong antimicrobial activity.
Antioxidant constituents.
Pharmacological Actions
Astragalus membranaceus and its constituents (astragaloside IV, cycloastragenol, Astragalus polysaccharide) inhibit tumour growth, invasion and metastasis and enhance antitumour immunity across lung, colorectal and gastrointestinal cancers (preclinical, incl. in vivo).
Immune support / immunomodulation (activates macrophages, NK cells, T and B lymphocytes)
Antimicrobial (antibacterial and antifungal via carvacrol and thymol) - supports respiratory and gastrointestinal infections; a small clinical study found emulsified oregano oil cleared enteric parasites (incl. Blastocystis hominis) and improved gut symptoms
Antimicrobial (antibacterial and antifungal via carvacrol and thymol) - supports respiratory and gastrointestinal infections; a small clinical study found emulsified oregano oil cleared enteric parasites (incl. Blastocystis hominis) and improved gut symptoms
Carminative digestive for indigestion (traditional bitter aromatic)
Traditional & Indicated Uses
inferred from anti-inflammatory action
Astragalus membranaceus protects against gastrointestinal cancers; astragaloside IV inhibits lung cancer metastasis via macrophage repolarization, cycloastragenol boosts CD8+ T-cell antitumour immunity (with anti-PD-1 synergy), and Astragalus polysaccharide suppresses inflammation-induced colorectal cancer (preclinical).
Supports resistance to colds and respiratory infection (immune)
Adaptogenic tonic for fatigue and low vitality (traditional 'Qi' tonic)
Immune support / immunomodulation (activates macrophages, NK cells, T and B lymphocytes); Supports resistance to colds and respiratory infection (immune)
Supports resistance to colds and respiratory infection (immune)
inferred from anti-inflammatory action
Renoprotective (kidney support) - as an adjunct in chronic kidney disease, reduced proteinuria and raised haemoglobin and serum albumin across trials (Cochrane review; study quality low)
inferred from anti-inflammatory action
inferred from anti-inflammatory action
Aromatic support for coughs and colds (traditional)
Aromatic support for coughs and colds (traditional)
Carminative digestive for indigestion (traditional bitter aromatic)
Antimicrobial (antibacterial and antifungal via carvacrol and thymol) - supports respiratory and gastrointestinal infections; a small clinical study found emulsified oregano oil cleared enteric parasites (incl. Blastocystis hominis) and improved gut symptoms
inferred from anti-inflammatory action
inferred from antifungal action
Safety, Cautions & Contraindications
Astragalus stimulates immune activity; on theoretical grounds it should be used cautiously in autoimmune disease and with immunosuppressant medicines (for example after organ transplant) - discuss with a clinician.
Generally well tolerated; high-quality long-term human safety and toxicity data remain limited.
Safety in pregnancy and breastfeeding has not been established; avoid medicinal doses.
Culinary amounts are safe. Concentrated oregano essential oil is a strong irritant - dilute well before any topical use and do not take undiluted oil internally.
May lower blood sugar and has a mild antiplatelet effect, so use caution with antidiabetic or anticoagulant medicines; avoid medicinal/oil doses in pregnancy. Allergy is possible in people sensitive to the mint family (Lamiaceae).
External Ids
Botanical Description
Erect perennial herb with a long, fibrous, pale yellow taproot. The leaves are pinnately compound with numerous small, oval leaflets, giving a soft, ferny appearance. Small, pale yellow, pea-like flowers are borne in loose axillary clusters (racemes), followed by membranous, inflated seed pods that give the species its name.[5]
Perennial herb/subshrub (Lamiaceae), 20-80 cm tall, with square, often reddish, downy stems. Leaves are opposite, ovate and aromatic. Small purplish-pink (occasionally white) flowers are borne in dense, flattened, corymb-like clusters at the branch tips.[11]
Habitat
Native to the grasslands, sunny slopes and forest margins of northern and north-eastern China, Mongolia and parts of Korea; widely cultivated as a medicinal crop across East Asia.[5]
Native to the Mediterranean, Europe and temperate Asia and widely naturalised elsewhere, growing on dry, sunny grassland, banks and scrubby hillsides, typically on calcareous soils.[11]
Harvesting
The root is dug from plants at least four years old, typically in spring or autumn, then cleaned and dried, often sliced into the characteristic pale, fibrous 'coin' slices used in traditional decoctions.[5]
Traditional Uses
Oregano has a long Mediterranean culinary-medicinal tradition as an aromatic digestive bitter and antiseptic remedy for coughs, colds and infections. Modern research on its carvacrol- and thymol-rich essential oil strongly supports broad antibacterial, antifungal and antioxidant activity, consistent with these traditional uses.[11, 12]
Preparations
Dried herb steeped in hot water as a digestive, aromatic tea.
The most-studied form; concentrated oil is a strong irritant and must be well diluted before topical use and never taken undiluted internally.
A small clinical study used an emulsified oregano oil preparation to clear enteric parasites and improve gut symptoms; oral use of concentrated oil should be supervised.
Dosage
The WHO monograph on Radix Astragali gives doses of 3-9 g per day. Traditional Chinese medicine references often cite a considerably higher 9-30 g of dried root per day; WHO's figure is the conservative regulatory-tier one and is stated here in preference. Educational reference only, not a prescription.
Clinical studies commonly use extracts providing the equivalent of several grams of dried root daily, in divided doses. Educational reference only, not a prescription.
Culinary amounts (as a food seasoning or mild tea) are considered safe; concentrated essential oil should only be used well diluted and is not intended for undiluted internal use without professional guidance. Educational reference only, not a prescription.
References
Lookalikes Review
References & Sources
- Xu, B., Huang, J.P., Peng, G., Cao, W., Liu, Z. et al (2024) 'Total biosynthesis of the medicinal triterpenoid saponin astragalosides', Nature Plants, 10(11), pp. 1826-1837. doi:10.1038/s41477-024-01827-4 Preclinical
https://doi.org/10.1038/s41477-024-01827-4 - Auyeung, K.K., Han, Q.B. and Ko, J.K (2016) 'Astragalus membranaceus: A Review of its Protection Against Inflammation and Gastrointestinal Cancers', The American Journal of Chinese Medicine, 44(1), pp. 1-22. doi:10.1142/S0192415X16500014 Traditional / reference
https://doi.org/10.1142/S0192415X16500014 - Zhang, Y., Ji, W., Qin, H., Chen, Z., Zhou, Y. et al (2024) 'Astragalus polysaccharides alleviate DSS-induced ulcerative colitis in mice by restoring SCFA production and regulating Th17/Treg cell homeostasis in a microbiota-dependent manner', Carbohydrate Polymers, 349, pp. 122829. doi:10.1016/j.carbpol.2024.122829 Preclinical
https://doi.org/10.1016/j.carbpol.2024.122829 - Fu, J., Wang, Z., Huang, L., Zheng, S., Wang, D., Chen, S., Zhang, H. and Yang, S (2014) 'Review of the botanical characteristics, phytochemistry, and pharmacology of Astragalus membranaceus (Huangqi)', Phytotherapy Research, 28(9), pp. 1275-1283. doi:10.1002/ptr.5188 Meta-analysis / review
https://doi.org/10.1002/ptr.5188 - Zhang, J., Wu, C., Gao, L., Du, G. and Qin, X (2019) 'Astragaloside IV derived from Astragalus membranaceus: A research review on the pharmacological effects', Advances in Pharmacology. doi:10.1016/bs.apha.2019.08.002 Traditional / reference
https://doi.org/10.1016/bs.apha.2019.08.002 - Dong, M., Li, J., Yang, D., Li, M. and Wei, J (2023) 'Biosynthesis and pharmacological activities of flavonoids, triterpene saponins and polysaccharides derived from Astragalus membranaceus', Molecules, 28(13), pp. 5018. doi:10.3390/molecules28135018 Meta-analysis / review
https://doi.org/10.3390/molecules28135018 - Chen, G., Jiang, N., Zheng, J., Hu, H., Yang, H., Lin, A., Hu, B. and Liu, H (2023) 'Structural characterization and anti-inflammatory activity of polysaccharides from Astragalus membranaceus', International Journal of Biological Macromolecules, 241, pp. 124386. doi:10.1016/j.ijbiomac.2023.124386 Preclinical
https://doi.org/10.1016/j.ijbiomac.2023.124386 - Zheng, Q., Zhuang, Z., Wang, Z., Deng, L., Jin, W., Huang, Z., Zheng, G. and Wang, Y (2020) 'Clinical and preclinical systematic review of Astragalus membranaceus for viral myocarditis', Oxidative Medicine and Cellular Longevity, 2020, pp. 1560353. doi:10.1155/2020/1560353 Meta-analysis / review
https://doi.org/10.1155/2020/1560353 - Dai, Y., Wang, Y., Kang, Q., Wu, Y., Liu, Y., Su, Y., Wang, X., Xiu, M. and He, J (2024) 'The protective effect and bioactive compounds of Astragalus membranaceus against neurodegenerative disorders via alleviating oxidative stress in Drosophila', FASEB Journal, 38(13), pp. e23727. doi:10.1096/fj.202400390R Preclinical
https://doi.org/10.1096/fj.202400390R - Xu, L., Xu, X., Hou, X., Wang, F., Gao, S. and Zhang, H (2019) 'Adjuvant therapy with Astragalus membranaceus for post-stroke fatigue: a systematic review', Metabolic Brain Disease, 35(1), pp. 83-93. doi:10.1007/s11011-019-00483-4 Meta-analysis / review
https://doi.org/10.1007/s11011-019-00483-4 - Li, C.X., Liu, Y., Zhang, Y.Z., Li, J.C. and Lai, J (2022) 'Astragalus polysaccharide: a review of its immunomodulatory effect', Archives of Pharmacal Research. doi:10.1007/s12272-022-01393-3 Preclinical
https://doi.org/10.1007/s12272-022-01393-3 - Jin, M., Zhao, K., Huang, Q. and Shang, P (2014) 'Structural features and biological activities of the polysaccharides from Astragalus membranaceus', International Journal of Biological Macromolecules, 64, pp. 257-266. doi:10.1016/j.ijbiomac.2013.12.002 Preclinical
https://doi.org/10.1016/j.ijbiomac.2013.12.002 - Liu, Y. and Lv, W (2019) 'Research progress in Astragalus membranaceus and its active components on immune responses in liver fibrosis', Chinese Journal of Integrative Medicine, 26(10), pp. 794-800. doi:10.1007/s11655-019-3039-1 Meta-analysis / review
https://doi.org/10.1007/s11655-019-3039-1 - World Health Organization (1999) 'Radix Astragali'. Available at: https://iris.who.int/items/6418d8af-5200-4e6b-9bf5-004f3aa62a37 Traditional / reference
https://iris.who.int/items/6418d8af-5200-4e6b-9bf5-004f3aa62a37 - Xu, F. and Cui, W.-Q. and Wei, Y. and Cui, J. and Qiu, J. and Hu, L.-L. and Gong, W.-Y. and Dong, J.-C. and Liu, B.-J (2018) 'Astragaloside IV inhibits lung cancer progression and metastasis by modulating macrophage polarization through AMPK signaling', Journal of Experimental & Clinical Cancer Research, 37(1), pp. 207. doi:10.1186/s13046-018-0878-0 Preclinical
https://doi.org/10.1186/s13046-018-0878-0 - Deng, G. and Zhou, L. and Wang, B. and Sun, X. and Zhang, Q. and Chen, H. and Wan, N. and Ye, H. and Wu, X. and Sun, D. and Sun, Y. and Cheng, H (2022) 'Targeting cathepsin B by cycloastragenol enhances antitumor immunity of CD8 T cells via inhibiting MHC-I degradation', Journal for ImmunoTherapy of Cancer, 10(10), pp. e004874. doi:10.1136/jitc-2022-004874 Preclinical
https://doi.org/10.1136/jitc-2022-004874 - Li, Q. and Zhang, C. and Xu, G. and Shang, X. and Nan, X. and Li, Y. and Liu, J. and Hong, Y. and Wang, Q. and Peng, G (2024) 'Astragalus polysaccharide ameliorates CD8 T cell dysfunction through STAT3/Gal-3/LAG3 pathway in inflammation-induced colorectal cancer', Biomedicine & Pharmacotherapy, 171, pp. 116172. doi:10.1016/j.biopha.2024.116172 Preclinical
https://doi.org/10.1016/j.biopha.2024.116172 - Zhang, H.W., Lin, Z.X., Xu, C., Leung, C. and Chan, L.S (2014) 'Astragalus (a traditional Chinese medicine) for treating chronic kidney disease', Cochrane Database of Systematic Reviews. doi:10.1002/14651858.CD008369.pub2 Meta-analysis / review
https://doi.org/10.1002/14651858.CD008369.pub2
- Angiolella, L., Rojas, F., Mussin, J. and Giusiano, G (2023) 'Modulatory effect of Origanum vulgare essential oil and carvacrol on Malassezia spp. virulence factors', Medical Mycology, 61(3), pp. myad026. doi:10.1093/mmy/myad026 Preclinical
https://doi.org/10.1093/mmy/myad026 - Veenstra, J.P. and Johnson, J.J (2019) 'Oregano (Origanum vulgare) extract for food preservation and improvement in gastrointestinal health', International Journal of Nutrition, 3(4), pp. 43-52. doi:10.14302/issn.2379-7835.ijn-19-2703 Preclinical
https://doi.org/10.14302/issn.2379-7835.ijn-19-2703 - Stojanovic, N.M., Mitic, K.V., Nesic, M., Stankovic, M. and others (2024) 'Oregano (Origanum vulgare) Essential Oil and Its Constituents Prevent Rat Kidney Tissue Injury and Inflammation Induced by a High Dose of L-Arginine', International Journal of Molecular Sciences, 25(2), pp. 941. doi:10.3390/ijms25020941 Preclinical
https://doi.org/10.3390/ijms25020941 - Mertzanidis, D., Nakas, A., Assimopoulou, A.N. and Kokkini, S (2023) 'Unravelling the Chemotaxonomic Identity of 'White' and 'Black' Oregano (Origanum vulgare) in Northern Greece', Planta Medica, 89(4), pp. 433-440. doi:10.1055/a-1949-8895 Preclinical
https://doi.org/10.1055/a-1949-8895 - Kosakowska, O., Weglarz, Z., Styczynska, S., Synowiec, A. and others (2024) 'Activity of Common Thyme, Greek Oregano, and Common Oregano (Origanum vulgare) Essential Oils against Selected Phytopathogens', Molecules, 29(19), pp. 4617. doi:10.3390/molecules29194617 Preclinical
https://doi.org/10.3390/molecules29194617 - Hou, H., Zhang, X., Zhao, T. and Zhou, L (2020) 'Effects of Origanum vulgare essential oil and its two main components, carvacrol and thymol, on a plant pathogen', PeerJ, 8, pp. e9626. doi:10.7717/peerj.9626 Preclinical
https://doi.org/10.7717/peerj.9626 - Hao, Y., Li, J. and Shi, L (2021) 'A Carvacrol-Rich Essential Oil Extracted From Oregano (Origanum vulgare 'Hot & Spicy') Exerts Potent Antibacterial Effects', Frontiers in Microbiology, 12, pp. 741861. doi:10.3389/fmicb.2021.741861 Preclinical
https://doi.org/10.3389/fmicb.2021.741861 - Baranauskaite, J., Jakstas, V., Ivanauskas, L., Kopustinskiene, D.M. and others (2016) 'Optimization of carvacrol, rosmarinic, oleanolic and ursolic acid extraction from oregano herbs (Origanum onites L., Origanum vulgare spp. hirtum and Origanum vulgare L.)', Natural Product Research, 30(6), pp. 672-674. doi:10.1080/14786419.2015.1038998 Preclinical
https://doi.org/10.1080/14786419.2015.1038998 - Zinno, P., Guantario, B., Lombardi, G., Ranaldi, G. and others (2023) 'Chemical Composition and Biological Activities of Essential Oils from Origanum vulgare Genotypes Belonging to the Carvacrol and Thymol Chemotypes', Plants, 12(6), pp. 1344. doi:10.3390/plants12061344 Preclinical
https://doi.org/10.3390/plants12061344 - Kolypetri, S., Kostoglou, D., Nikolaou, A., Kourkoutas, Y. and others (2023) 'Chemical Composition, Antibacterial and Antibiofilm Actions of Oregano (Origanum vulgare subsp. hirtum) Essential Oil against Salmonella Typhimurium and Listeria monocytogenes', Foods, 12(15), pp. 2893. doi:10.3390/foods12152893 Preclinical
https://doi.org/10.3390/foods12152893 - Soltani, S., Shakeri, A., Iranshahi, M. and Boozari, M (2021) 'A Review of the Phytochemistry and Antimicrobial Properties of Origanum vulgare L. and Subspecies', Iranian Journal of Pharmaceutical Research. doi:10.22037/ijpr.2020.113874.14539 Traditional / reference
https://doi.org/10.22037/ijpr.2020.113874.14539 - Sharifi-Rad, M., Varoni, E.M., Iriti, M., Martorell, M., Setzer, W.N., del Mar Contreras, M., Salehi, B., Soltani-Nejad, A., Rajabi, S., Tajbakhsh, M. and Sharifi-Rad, J (2018) 'Carvacrol and human health: A comprehensive review', Phytotherapy Research. doi:10.1002/ptr.6103 Preclinical
https://doi.org/10.1002/ptr.6103 - Force, M., Sparks, W.S. and Ronzio, R.A (2000) 'Inhibition of enteric parasites by emulsified oil of oregano in vivo', Phytotherapy Research, 14(3), pp. 213--214. doi:10.1002/(SICI)1099-1573(200005)14:3<213::AID-PTR583>3.0.CO;2-U Clinical study
https://doi.org/10.1002/(SICI)1099-1573(200005)14:3<213::AID-PTR583>3.0.CO;2-U
Generated automatically from the Omnia Sana plant database and its cited sources. For educational purposes only — not medical advice. Always consult a qualified practitioner before using medicinal plants.